2023 Oeiras Indoors II – Singles
| Singles | |
|---|---|
| 2023 Oeiras Indoors II | |
| Champion | Arthur Fils |
| Runner-up | Joris De Loore |
| Score | 6–1, 7–6(7–4) |
Joris De Loore was the defending champion but lost in the final to Arthur Fils.
Fils won the title after defeating De Loore 6–1, 7–6(7–4) in the final.